Wood-grinder.



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Wax wows avwewlbz CLARENCE FANCHER PATENTED MAY 23, 1905.

No. 790, 24. I

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WOOD GRINDER.

APPLICATION FILED JUNE 8, 1904.

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win wows Patented May 23, 1905.

PATENT OFF-ICE.

CLARENCE FANCHER, OF SANDYHILL, NEW YORK.

WOOD-GRINDER.

SPECIFICATION forming part of Letters Patent No. 790,624, dated May 23, 1905. Application filed June 8, 1904. Serial No. 211,703.

To aZZ whom it may concern.-

Be it known that I, CLARENCE FANCHER, a

of New York, have invented certain new and useful Improvements in VVood-Grinders; and- I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in wood-grinders.

It has for its object to provide means for regulating the pressure to the several pistoncylinders from a centrally-arranged common valve. By so doing I reduce and simplify the piping usually required for grinders of the class shown and described herein.

To this end my invention consists in a com mon valve-casing having common high and low pressure compartments,'common outletcompartments, and separate passages for the entrance of the pipes to and from the different cylinders, said individual connections adapted to be placed into or out of communication with the common high and low pressure and outlet compartments by means of separate valves the operating-handles for whichare all arranged adjacent to one another in easy reach of the operator.

In the accompanying drawings, illustrating the preferred embodiment of my invention, Figure 1 is a rear elevation of a triple-cylinder grinder equipped withmy invention. Fig. 2 is a side elevation thereof. Fig. 3 is an enlarged elevation of the valve-casing with the front plateremoved. Fig. 4 is a central vertical sectional view of said valve-casing on the line 00 a: of Fig. 6. Fig. 5 is a vertical cross-sectional view on the line y ft] of Fig. 3, and Fig. 6is a horizontal cross-sectional view on the line 2 2 of Fig. 3.

While I have shown my invention applied to a triple-cylinder machine, it is obvious that it may readily be applied. to diflerent forms having more or less cylinders by simply lengthening or shortening the valve-casing and making the necessary connections.

The valve-casing l is preferably arranged atthe rear of the machine and is divided verhigh and low pressure compartments, respec-* tively. Other oppositely-arranged perforations 1011 are made in the partition between the outlet-compartment and the high and low pressure compartments, respectively, each pair of said'perforations being arranged vertically midway of the inlet and outlet passages to each cylinder.

Valve-covers 12 13 are arranged oppositely in pairs, one in thehigh and the other in the low pressure compartment. Said valve-covers are circular and generally plate-like in form, and each has a perforation 14 and is provided with a raised arcuate portion 15 of suflicient length to cover a perforation 10 or 11 and one of the openings 8 or 9. Each pair of valve-covers is secured to a shaft 18, passing through the casing and attached to an operating-handle 19. Said valve-covers are somounted upon said shaft 16 that when the raised portion 15 of one of the pairs is arranged so as to provide forcommunication through said raised portion. 15 between the openings 11 and 9 in the low-pressure compartment 3 and the perforation 1 L abuts against the face of the inner partition (see right of 6) the raised portion of the other valve-cover will cover outlet-passage 10 and its perforation 14 will be in alinement with the opening 8 to the pipe leading above the piston. In this position the high pressure passes to the cylinder to force the wood upon the stone, while the low pressure escapes through the outlet. If the positions of the valve-covers are reversed by turning the handle the other way, the low pressure cylinder the air or water on the other side of the piston will escape through the pipe connecting that side of the piston-chamber with the valve through the raised portion of the valve-cover and into the outlet-compartment. The high pressure is used to force the piston down to bring the wood against the stone, while the low pressure is used to raise the piston for the insertion of another piece of wood. The two valves to the right of Figs. 3 and 6 are arranged to press the wood upon the stone, while the left-hand valve is in position to feed the low pressure below the piston to raise the same for inserting more wood.

Should it be desired to use only one pressure, the central portion and one side of valve are used, the opposite side being closed.

I am aware that changes may be made in my invention without departing from the spirit or sacrificing the advantages thereof. I therefore reserve the right to make such changes as fairly fall within the scope of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a device of the character described, a common central valve casing containing valves adapted to control each of the pistoncylinders, high and low pressure compartments in said valve-easing, and means for placing one of said valves in communication with either of said compartments so that different degrees of pressure may be used to operate the piston on its downward and upward strokes.

2. In a device of the character described, a valve-casing having high and low pressure compartments, an outlet-compartment, and compartments for connection with each of the pipes from a piston-cylinder, and means of communication between said several compartments, whereby the piston may be raised and lowered by different pressures.

3. In a device of the character described, a valve-easing having high and low pressure compartments, an outlet-compartment, compartments for connection with each of the pipes from a piston-cylinder, the partitions in said casing having passages between the high and low pressure compartments and the outlet-compartment and also between said high and low pressure compartments and the compartments for connection with the pipes from the piston-cylinder, and oppositely-arranged valve-covers of such form that they may be adjusted in connection with said passages so that the piston may be raised and lowered by different pressures.

4. In a device of the character described, a valve-casing having high and low pressure compartments, an outlet-compartment, compartments for connection with each of the pipes from a piston-cylinder, the partitionsin said casing having passages between the high and low pressure compartments and the outlet-compartment and also between said high and low pressure compartments and the compartments for connection with the pipes from the piston-cylinder, and oppositely-arranged valve covers mounted on a common shaft adapted, to be operated in connection with said passages so that the piston may be raised and lowered by dilferent pressures.

5. In a device of the character described, a valve-casing having high and low pressure compartments, an outlet-compartment, compartments for connection with each of the pipes from a piston-cylinder, the partitions in said casing having passages between the high and low pressure compartments and the outlet-compartment and also between said high and low pressure compartments and the compartments for connection with the pipes from the piston-cylinder, and oppositely-arranged circular valve-covers each having an arcuate raised portion and a perforation so arranged with relation to each other that said valvecovers may be adjusted with relation to said passages so that the piston may be raised and lowered by different pressures.

6. In a device of the character described, a central valve-casing having common high and low pressure compartments, a common outletcompartment,separate compartments for communication with the pipes from each pistoncylinder, the partitions in said casing having passages between the high and low pressure compartments and the outlet-com partment and between the high and low pressure compartments and the separate compartments for connection with the pipes from the several cylinders, and oppositely-a1 'anged valve-coversol such form that they may be adjusted so that the piston may be raised and lowered by different pressures.

In testimony whereof I afiix my signature in presence of two witnesses.

CLARENCE FAN (1H ER. l/Vitnesses:

C. H. FENNEL, CHAS. B. DIX. 

